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Harvard Radio Meteor Project
The Harvard Radio Meteor Project is a scientific investigative station based within Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma .... The Harvard station is investigating data specifically upon the height, the deceleration (speeds ) and the distribution of ionized material within the trail of meteors. The method involves a system of radar producing stations using data that has originated from the reflected pulse returning from the ion columns of meteors. The antenna used at the Harvard station (main site) is described as a ''double-trough'' type antenna. References {{authority control Harvard University Astrophysics research institutes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard University
Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyman John Harvard (clergyman), John Harvard, it is the oldest institution of higher learning in the United States. Its influence, wealth, and rankings have made it one of the most prestigious universities in the world. Harvard was founded and authorized by the Massachusetts General Court, the governing legislature of Colonial history of the United States, colonial-era Massachusetts Bay Colony. While never formally affiliated with any Religious denomination, denomination, Harvard trained Congregationalism in the United States, Congregational clergy until its curriculum and student body were gradually secularized in the 18th century. By the 19th century, Harvard emerged as the most prominent academic and cultural institution among the Boston B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard Station (Metra)
Harvard station is a Metra commuter rail station in Harvard, Illinois. It is the terminus of the Union Pacific Northwest Line. Harvard is the farthest Metra station from Chicago at from Chicago; the next furthest stop, on the North Central Service, is over 10 miles closer to Chicago at . The station contains a parking lot operated by the City of Harvard. A coach yard is adjacent to the station and is used to store trains during weekends and overnight hours. Harvard was the only Metra station located in the M zone, until all fare zones beyond J were retired by Metra in 2018. Trains that traveled to Chicago passed through an entire fare zone to reach . No stations were located in zone L. Originally, Hartland was the only station located in zone L, however, the stop was closed in 1984. Harvard was then located in fare zone J until February 2024, when the fare structure was simplified across the system. Harvard is now in Zone 4. It is the westernmost station of the Metra system; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antenna (radio)
In radio-frequency engineering, an antenna (American English) or aerial (British English) is an electronic device that converts an alternating current, alternating electric current into radio waves (transmitting), or radio waves into an electric current (receiving). It is the interface between radio waves Radio propagation, propagating through space and electric currents moving in metal Electrical conductor, conductors, used with a transmitter or receiver (radio), receiver. In transmission (telecommunications), transmission, a radio transmitter supplies an electric current to the antenna's Terminal (electronics), terminals, and the antenna radiates the energy from the current as electromagnetic radiation, electromagnetic waves (radio waves). In receiver (radio), reception, an antenna intercepts some of the power of a radio wave in order to produce an electric current at its terminals, that is applied to a receiver to be amplifier, amplified. Antennas are essential components ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Footnotes
In publishing, a note is a brief text in which the author comments on the subject and themes of the book and names supporting citations. In the editorial production of books and documents, typographically, a note is usually several lines of text at the bottom of the page, at the end of a chapter, at the end of a volume, or a house-style typographic usage throughout the text. Notes are usually identified with superscript numbers or a symbol.''The Oxford Companion to the English Language'' (1992) p. 709. Footnotes are informational notes located at the foot of the thematically relevant page, whilst endnotes are informational notes published at the end of a chapter, the end of a volume, or the conclusion of a multi-volume book. Unlike footnotes, which require manipulating the page design (text-block and page layouts) to accommodate the additional text, endnotes are advantageous to editorial production because the textual inclusion does not alter the design of the publication. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
